A corpora



E LYON AND A. F. WILLIAMS.

MOTOR MOUNTING.

APPLICATION FiLED JAN. 25'. 1919.

Patented Nov. 15, 1921,

UNHTE MEG EDMUND LYON AND ANTHONY F. WILLIAMS, OF ROCHESTER, N EW YORK, ASSIGNORS TO NORTH. EAST ELECTRIC COMPANY,

'IJION OF NEW YORK.

OF ROCHESTER, NEW YORK, A CORPORA- MOTOR-MOUNTING.

Specification of Letters Patent.

Patented Nov. 15., 11921,

Application filed January 25, 1919. Serial No. 273,096.

To aZZ 'w ham it may concern Be it known that we, EDMUND LYON and ANTHONY F. VVILLIAMS, citizens of the United States, residing at Rochester, in the county of Monroe and State of New York, have invented certain new and useful Improvements in Motor-Mountings and do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

An electric motor, or other dynamo-electric machine, when used in connection with the engine of an automotive vehicle, is frequently connected with the mechanism of the engine by means of sprocket-wheels and a chain. In order to provide for adjustment of the tension of the chain, in such an arrangement, the dynamo-electric machine is commonly mounted in such a manner that it maybe moved bodily, for a short distance, in the general direction of extension of the chain.

The present invention relates to the arrangement just described, and one object of the invention is to provide simple and effective meansfor adjusting the tension of the chain. To this end it is proposed to use a cradle-member in which the motor rests, in combination with a support for the cradle, the cradle and the suppprt having cooperating circularly-curved bearing-surfaces so disposed that relative movement of the surfaces results in lateral movement of the axis of'the motor. By the use of suitable unitary means the motor may be retained in the cradle and the cradle on the support.

The invention is more frilly described 1n connection with the following description of the embodiment thereof illustrated in the accompanying drawings, in which:

Figure 1 is a front-elevation of a motormounting embodying the present inventlon, together with a motor thereon and certain other parts associated with it. Fig. 2 1s a side-elevation of the parts shown in Fig. 1, and Fig. 3 is a fragmentary front-elevation, partly in vertical section, showing the motor and the adjacent parts of the mounting.

The invention is illustrated as embodied in a motor-mounting adapted for use in connection with the engine of an automobile,

particularly the well-known Ford automobile. The motor 5, which in this case is adapted also to operate as an electric generator, 18 mounted alongside the upper part of the cylinders 6 of the engine, which are partly indicated in dotted lines in Fig. 1. The shaft of the motor is connected with the forward end of the crank shaft 7 of the engine, and for this purpose a sprocket-wheel 8 1s fixed on the crank-shaft and connected, by a chain 9, with a sprocket-pinion 10 on the armature-shaft.

The drawings show also the cooling-fan 11 associated with the engine, this fan being mounted to rotate upon a stud 12 and being driven through a pulley 13 which is connected, by means of a belt 1 1, with apulley 15 fixed on the crank-shaft 7 1 The present invention resides particularly in a construction and arrangement of parts by which the motor and the fan are mounted, and by which adjustment is provided for the sprocket-chain 9. Support for the motor is provided by means of a frame or support '16 having a base which is adapted to rest upon the flange by which the cylindencasting of the engine is connected with the lower half of the crank-case, this base being perforated to receive the bolts by which the parts of the crank-case are secured together. These bolts are shownin dotted lines in the drawings.

To give additional rigidity to the support, it is provided, at the forward end, with an integral arm 17 extending across the front of the engine. It is desirable to attach this arm to the engine without the necessity of drilling any holes or performing any other machine-operation upon the engine. Accordingly, in the specific embodiment of the invention which is illustrated, the arm is adapted to be secured to the engine at the point normally occupied by a threaded stud upon which is mounted the fan-supporting arm. In using the present construction this stud is removed, and a screw 18 is passed through the perforated end of the arm and screwed into the open+ ing in which the said stud is normally fixed.

This substitution of a screw for the stud in question makes it necessary to provide other means for supporting the fan-carrying arm. Accordingly, a stud or screw 20 is threaded into the end of the arm 17, and upon this stud is pivoted the fan-carrying arm 19. The stud 12 upon which the fan rotates projects forwardly from the free end of the arm 19. Adjustment of the belt 14 is provided by threading an adjusting-screw 21 into the arm 19, this screw bearing against a lug on the front of the arm 17 as shown in Fi 1, and serving to adjust and maintain the angular position of the arm 19 upon the stud 20.

Adjustment of the chain 9 is provided by means of a cradle 22 of wedge-like form, on which the motor 5 rests. This cradle is provided with an upper concavebearing-surface adapted to fit against the body or frame of the motor; and since this body is cyliI1- drical in the illustrated motor, the said bearing-surface on the'cradle is circularly curved or cylindrical to correspond. The lower surface of the cradle is convex, and is also circularly curved about an axis eccentric to but parallel with the axis of curvature of the upper surface. The support 16, in turn, is provided with an upper concave bearing surface shaped to fit the lower bearing-surface of the cradle.

For convenience in manufacture the said surfaces do not extend continuously across the cradle and the support, but are interrupted, the lower bearing-surface of the cradle being provided, in part, by the edges of two depending parallel ribs 23 integral with the upper portion of the cradle.

The adjustment of the tension of the chain is secured by moving the cradle upon the bearing-surface on the support. In this manner the cradle is given a bodily movement about the axis of curvature of its lower bearing-surface. Since the axis of the armature-shaft is not coincident with said axis of curvature, the armature-shaft may thus be moved upwardly or downwardly in the general direction of extension of the chain 9, thus tightening or loosening the chain as may be required. At the same time the motor continues to rest securely within the upper concavity of the cradle, while the cradle in turn rests securely in the concave bearingsurface of the support.

The adjusting movement of the cradle just described may be produced in various ways, and it is not necessary to provide the apparatus itself with means for this purpose. It is more convenient, however, to provide some such means, and a simple device for this purpose is illustrated particularly in Fig. 8..

The cradle is provided with a depending lug 26 located between the flanges 23. and an adjusting-screw 25 is threaded into the outer wall of a recess 27 formed in the support 16, the inner end of the screw bearing against the lug 26. By driving the screw inwardly the lug, and with it the cradle, may be forced in a direction to raise the motor and tighten the chain. After such adjustment the screw means of a wire 28 passed through a hole in the screw and through holes in the support, as shown in Fig. 2.

Simple unitary means are provided for securing the motor, the cradle, and the support all together in their adjusted relation. These means have the form of a strap29, which is pivoted at its ends to lugs 24 on the support. The strap passes over the motor and is divided in the middle for. the sake of adjustment, the two parts of the strap being connected by a bolt 31 in the usual manner. When the chain is to be adjusted the nut on the bolt 31 is loosened, thus permitting the motor to be raised to the necessary extent by the action of the cradle. be tightened, and thereby not only is the motor fixed securely in position on the cradle, but the cradle is also fixed securely in position on the support.

While the cradle acts in the manner of a wedge to move the motor and thus tighten the chain, the present construction differs substantially from previous wedge-like adjusting devices in the respect that, owing to the peculiar form of the cradle, no additional means or provision is necessary to restrict the motor to movements in the desired direction, the -concavo-convex form of the cradle confining the motor strictly to movement in the desired direction, and thus adjustability is secured together with a simple and secure mounting for the motor.

While the invention has been illustrated as embodied in a mounting in which the cradle is shaped to receive and conform to a motor having a cylindrical body or frame, it will be apparent that it is not limited to use with a motor of this form, and that the invention is The nut may then not, in general, limited to the details of form and construction of the illustrated embodiment.

The invention claimed is: 1. A motor-mounting comprising a wedgelike cradle shaped to receive a motor and support.

2. A motor-mounting, as in claim 1, provided with means for adjusting the cradle upon the support by relative movement of said bearing-surfaces.

3. A motor-mounting comprising: a cradle provided with two eccentric circularly-curved bearing surfaces with parallel axes, one of said surfaces being concave and adapted to receive a cylindrical motor, and the other surface being convex; a support provided and; the support for holding the motor on the cradle and the cradle on the support.

4. Amotor-mounting comprising: a Wedgelike cradle having a concave surface shaped to receive a motor and having also a convex bearing-surface circularly curved about an 10- axis eccentric to but parallel with the axis of the motor-shaft; a support for the cradle, having a concave hearing-surface conforming to and cooperating with the bearing surface on the cradle; and an adjustable divided strap secured to the support and 1 embracing and securing both the motor and the cradle.

EDMUND LYON. ANTHONY F. WILLIAMS. 

